Tue Dec 27, 2022 6:49 pm
Hi xmasin,
A similar problem or the same one was solved couple of days ago. You can check this in the 7.7 changelog: mpls - fixed assigning of explicit null label for IPv6.
In the case we used IPv6 for the LDP backbone and once the explicit null label parameter was set, the loopback address (transport address) started flapping, so after several seconds no tcp/upd connection could be done to/from that address.
Try with the last 7.7rc or wait for the stable 7.7.